code: def calculate_std(self):
      std = np.array([np.std(self.data, ddof=1)])
      stdo = np.std(self.data_to_operators(), axis=1, ddof=1)
      stdp = np.std(self.data_to_parts(), axis=1, ddof=1)
      return {
          Component.TOTAL: std,
          Component.OPERATOR: stdo,
          Component.PART: stdp,
      }
  
imports: from enum import Enum
  import numpy
  import math
  import scipy.stats
label_desc: Use image node_id 3 for calling the Statistics obj's underlying member method code with example usage: obj.calculate_std() and returns: dict